Home / 20,625.48-30,869.76-18,780.84

Finding the Fourth Proportional to 20,625.48, 30,869.76 and 18,780.84

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Solution

The fourth proportional to 20,625.48, 30,869.76 and 18,780.84 is: 28,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.48 : 30,869.76 = 18,780.84 : x
  2. Step 2: Convert to fraction form
    20,625.48/30,869.76 = 18,780.84/x
  3. Step 3: Cross multiply
    20,625.48x = 30,869.76 × 18,780.84
  4. Step 4: Simplify right side
    20,625.48x = 579,760,023.40
  5. Step 5: Solve for x
    x = 579,760,023.40/20,625.48
  6. Step 6: Final answer
    x = 28,108.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.